1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2016 Icenowy Zheng <icenowy@aosc.xyz>
4 */
5
6 #include <linux/clk-provider.h>
7 #include <linux/of_address.h>
8 #include <linux/platform_device.h>
9
10 #include "ccu_common.h"
11 #include "ccu_reset.h"
12
13 #include "ccu_div.h"
14 #include "ccu_gate.h"
15 #include "ccu_mp.h"
16 #include "ccu_nm.h"
17
18 #include "ccu-sun8i-r.h"
19
20 static const struct clk_parent_data ar100_parents[] = {
21 { .fw_name = "losc" },
22 { .fw_name = "hosc" },
23 { .fw_name = "pll-periph" },
24 { .fw_name = "iosc" },
25 };
26
27 static const struct ccu_mux_var_prediv ar100_predivs[] = {
28 { .index = 2, .shift = 8, .width = 5 },
29 };
30
31 static struct ccu_div ar100_clk = {
32 .div = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO),
33
34 .mux = {
35 .shift = 16,
36 .width = 2,
37
38 .var_predivs = ar100_predivs,
39 .n_var_predivs = ARRAY_SIZE(ar100_predivs),
40 },
41
42 .common = {
43 .reg = 0x00,
44 .features = CCU_FEATURE_VARIABLE_PREDIV,
45 .hw.init = CLK_HW_INIT_PARENTS_DATA("ar100",
46 ar100_parents,
47 &ccu_div_ops,
48 0),
49 },
50 };
51
52 static CLK_FIXED_FACTOR_HW(ahb0_clk, "ahb0", &ar100_clk.common.hw, 1, 1, 0);
53
54 static SUNXI_CCU_M(apb0_clk, "apb0", "ahb0", 0x0c, 0, 2, 0);
55
56 /*
57 * Define the parent as an array that can be reused to save space
58 * instead of having compound literals for each gate. Also have it
59 * non-const so we can change it on the A83T.
60 */
61 static const struct clk_hw *apb0_gate_parent[] = { &apb0_clk.common.hw };
62 static SUNXI_CCU_GATE_HWS(apb0_pio_clk, "apb0-pio",
63 apb0_gate_parent, 0x28, BIT(0), 0);
64 static SUNXI_CCU_GATE_HWS(apb0_ir_clk, "apb0-ir",
65 apb0_gate_parent, 0x28, BIT(1), 0);
66 static SUNXI_CCU_GATE_HWS(apb0_timer_clk, "apb0-timer",
67 apb0_gate_parent, 0x28, BIT(2), 0);
68 static SUNXI_CCU_GATE_HWS(apb0_rsb_clk, "apb0-rsb",
69 apb0_gate_parent, 0x28, BIT(3), 0);
70 static SUNXI_CCU_GATE_HWS(apb0_uart_clk, "apb0-uart",
71 apb0_gate_parent, 0x28, BIT(4), 0);
72 static SUNXI_CCU_GATE_HWS(apb0_i2c_clk, "apb0-i2c",
73 apb0_gate_parent, 0x28, BIT(6), 0);
74 static SUNXI_CCU_GATE_HWS(apb0_twd_clk, "apb0-twd",
75 apb0_gate_parent, 0x28, BIT(7), 0);
76
77 static const char * const r_mod0_default_parents[] = { "osc32k", "osc24M" };
78 static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir",
79 r_mod0_default_parents, 0x54,
80 0, 4, /* M */
81 16, 2, /* P */
82 24, 2, /* mux */
83 BIT(31), /* gate */
84 0);
85
86 static const struct clk_parent_data a83t_r_mod0_parents[] = {
87 { .fw_name = "iosc" },
88 { .fw_name = "hosc" },
89 };
90 static const struct ccu_mux_fixed_prediv a83t_ir_predivs[] = {
91 { .index = 0, .div = 16 },
92 };
93 static struct ccu_mp a83t_ir_clk = {
94 .enable = BIT(31),
95
96 .m = _SUNXI_CCU_DIV(0, 4),
97 .p = _SUNXI_CCU_DIV(16, 2),
98
99 .mux = {
100 .shift = 24,
101 .width = 2,
102 .fixed_predivs = a83t_ir_predivs,
103 .n_predivs = ARRAY_SIZE(a83t_ir_predivs),
104 },
105
106 .common = {
107 .reg = 0x54,
108 .features = CCU_FEATURE_VARIABLE_PREDIV,
109 .hw.init = CLK_HW_INIT_PARENTS_DATA("ir",
110 a83t_r_mod0_parents,
111 &ccu_mp_ops,
112 0),
113 },
114 };
115
116 static struct ccu_common *sun8i_a83t_r_ccu_clks[] = {
117 &ar100_clk.common,
118 &apb0_clk.common,
119 &apb0_pio_clk.common,
120 &apb0_ir_clk.common,
121 &apb0_timer_clk.common,
122 &apb0_rsb_clk.common,
123 &apb0_uart_clk.common,
124 &apb0_i2c_clk.common,
125 &apb0_twd_clk.common,
126 &a83t_ir_clk.common,
127 };
128
129 static struct ccu_common *sun8i_h3_r_ccu_clks[] = {
130 &ar100_clk.common,
131 &apb0_clk.common,
132 &apb0_pio_clk.common,
133 &apb0_ir_clk.common,
134 &apb0_timer_clk.common,
135 &apb0_uart_clk.common,
136 &apb0_i2c_clk.common,
137 &apb0_twd_clk.common,
138 &ir_clk.common,
139 };
140
141 static struct ccu_common *sun50i_a64_r_ccu_clks[] = {
142 &ar100_clk.common,
143 &apb0_clk.common,
144 &apb0_pio_clk.common,
145 &apb0_ir_clk.common,
146 &apb0_timer_clk.common,
147 &apb0_rsb_clk.common,
148 &apb0_uart_clk.common,
149 &apb0_i2c_clk.common,
150 &apb0_twd_clk.common,
151 &ir_clk.common,
152 };
153
154 static struct clk_hw_onecell_data sun8i_a83t_r_hw_clks = {
155 .hws = {
156 [CLK_AR100] = &ar100_clk.common.hw,
157 [CLK_AHB0] = &ahb0_clk.hw,
158 [CLK_APB0] = &apb0_clk.common.hw,
159 [CLK_APB0_PIO] = &apb0_pio_clk.common.hw,
160 [CLK_APB0_IR] = &apb0_ir_clk.common.hw,
161 [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw,
162 [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw,
163 [CLK_APB0_UART] = &apb0_uart_clk.common.hw,
164 [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw,
165 [CLK_APB0_TWD] = &apb0_twd_clk.common.hw,
166 [CLK_IR] = &a83t_ir_clk.common.hw,
167 },
168 .num = CLK_NUMBER,
169 };
170
171 static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = {
172 .hws = {
173 [CLK_AR100] = &ar100_clk.common.hw,
174 [CLK_AHB0] = &ahb0_clk.hw,
175 [CLK_APB0] = &apb0_clk.common.hw,
176 [CLK_APB0_PIO] = &apb0_pio_clk.common.hw,
177 [CLK_APB0_IR] = &apb0_ir_clk.common.hw,
178 [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw,
179 [CLK_APB0_UART] = &apb0_uart_clk.common.hw,
180 [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw,
181 [CLK_APB0_TWD] = &apb0_twd_clk.common.hw,
182 [CLK_IR] = &ir_clk.common.hw,
183 },
184 .num = CLK_NUMBER,
185 };
186
187 static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = {
188 .hws = {
189 [CLK_AR100] = &ar100_clk.common.hw,
190 [CLK_AHB0] = &ahb0_clk.hw,
191 [CLK_APB0] = &apb0_clk.common.hw,
192 [CLK_APB0_PIO] = &apb0_pio_clk.common.hw,
193 [CLK_APB0_IR] = &apb0_ir_clk.common.hw,
194 [CLK_APB0_TIMER] = &apb0_timer_clk.common.hw,
195 [CLK_APB0_RSB] = &apb0_rsb_clk.common.hw,
196 [CLK_APB0_UART] = &apb0_uart_clk.common.hw,
197 [CLK_APB0_I2C] = &apb0_i2c_clk.common.hw,
198 [CLK_APB0_TWD] = &apb0_twd_clk.common.hw,
199 [CLK_IR] = &ir_clk.common.hw,
200 },
201 .num = CLK_NUMBER,
202 };
203
204 static struct ccu_reset_map sun8i_a83t_r_ccu_resets[] = {
205 [RST_APB0_IR] = { 0xb0, BIT(1) },
206 [RST_APB0_TIMER] = { 0xb0, BIT(2) },
207 [RST_APB0_RSB] = { 0xb0, BIT(3) },
208 [RST_APB0_UART] = { 0xb0, BIT(4) },
209 [RST_APB0_I2C] = { 0xb0, BIT(6) },
210 };
211
212 static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = {
213 [RST_APB0_IR] = { 0xb0, BIT(1) },
214 [RST_APB0_TIMER] = { 0xb0, BIT(2) },
215 [RST_APB0_UART] = { 0xb0, BIT(4) },
216 [RST_APB0_I2C] = { 0xb0, BIT(6) },
217 };
218
219 static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = {
220 [RST_APB0_IR] = { 0xb0, BIT(1) },
221 [RST_APB0_TIMER] = { 0xb0, BIT(2) },
222 [RST_APB0_RSB] = { 0xb0, BIT(3) },
223 [RST_APB0_UART] = { 0xb0, BIT(4) },
224 [RST_APB0_I2C] = { 0xb0, BIT(6) },
225 };
226
227 static const struct sunxi_ccu_desc sun8i_a83t_r_ccu_desc = {
228 .ccu_clks = sun8i_a83t_r_ccu_clks,
229 .num_ccu_clks = ARRAY_SIZE(sun8i_a83t_r_ccu_clks),
230
231 .hw_clks = &sun8i_a83t_r_hw_clks,
232
233 .resets = sun8i_a83t_r_ccu_resets,
234 .num_resets = ARRAY_SIZE(sun8i_a83t_r_ccu_resets),
235 };
236
237 static const struct sunxi_ccu_desc sun8i_h3_r_ccu_desc = {
238 .ccu_clks = sun8i_h3_r_ccu_clks,
239 .num_ccu_clks = ARRAY_SIZE(sun8i_h3_r_ccu_clks),
240
241 .hw_clks = &sun8i_h3_r_hw_clks,
242
243 .resets = sun8i_h3_r_ccu_resets,
244 .num_resets = ARRAY_SIZE(sun8i_h3_r_ccu_resets),
245 };
246
247 static const struct sunxi_ccu_desc sun50i_a64_r_ccu_desc = {
248 .ccu_clks = sun50i_a64_r_ccu_clks,
249 .num_ccu_clks = ARRAY_SIZE(sun50i_a64_r_ccu_clks),
250
251 .hw_clks = &sun50i_a64_r_hw_clks,
252
253 .resets = sun50i_a64_r_ccu_resets,
254 .num_resets = ARRAY_SIZE(sun50i_a64_r_ccu_resets),
255 };
256
sunxi_r_ccu_init(struct device_node * node,const struct sunxi_ccu_desc * desc)257 static void __init sunxi_r_ccu_init(struct device_node *node,
258 const struct sunxi_ccu_desc *desc)
259 {
260 void __iomem *reg;
261
262 reg = of_io_request_and_map(node, 0, of_node_full_name(node));
263 if (IS_ERR(reg)) {
264 pr_err("%pOF: Could not map the clock registers\n", node);
265 return;
266 }
267
268 sunxi_ccu_probe(node, reg, desc);
269 }
270
sun8i_a83t_r_ccu_setup(struct device_node * node)271 static void __init sun8i_a83t_r_ccu_setup(struct device_node *node)
272 {
273 sunxi_r_ccu_init(node, &sun8i_a83t_r_ccu_desc);
274 }
275 CLK_OF_DECLARE(sun8i_a83t_r_ccu, "allwinner,sun8i-a83t-r-ccu",
276 sun8i_a83t_r_ccu_setup);
277
sun8i_h3_r_ccu_setup(struct device_node * node)278 static void __init sun8i_h3_r_ccu_setup(struct device_node *node)
279 {
280 sunxi_r_ccu_init(node, &sun8i_h3_r_ccu_desc);
281 }
282 CLK_OF_DECLARE(sun8i_h3_r_ccu, "allwinner,sun8i-h3-r-ccu",
283 sun8i_h3_r_ccu_setup);
284
sun50i_a64_r_ccu_setup(struct device_node * node)285 static void __init sun50i_a64_r_ccu_setup(struct device_node *node)
286 {
287 sunxi_r_ccu_init(node, &sun50i_a64_r_ccu_desc);
288 }
289 CLK_OF_DECLARE(sun50i_a64_r_ccu, "allwinner,sun50i-a64-r-ccu",
290 sun50i_a64_r_ccu_setup);
291
